package com.vastcom.wheather;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.vastcom.wheather.db.City;
import com.vastcom.wheather.db.Country;
import com.vastcom.wheather.db.Province;
import com.vastcom.wheather.util.HttpUtil;
import com.vastcom.wheather.util.Utility;

import org.litepal.LitePal;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * Created by avenuezhang on 2018/11/7.
 */

public class ChooseAreaFragment extends Fragment {

    public static final int LEVEL_PROVINCE=0;
    public static final int LEVEL_CITY=1;
    public static final int LEVEL_COUNTY=2;
    private ProgressDialog progressDialog;
    private TextView titleText;
    private Button backButton;
    private ListView listView;
    private ArrayAdapter<String> adapter;
    private List<String> dataList=new ArrayList<>();

    private List<Province> provinceList;

    private List<City> cityList;

    private List<Country> countryList;

    private Province selectedProvince;
    private City selectedCity;
    private int currentLevel;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view=inflater.inflate(R.layout.choose_area,container,false);
        titleText=(TextView)view.findViewById(R.id.title_text);
        backButton=(Button)view.findViewById(R.id.back_button);
        listView=(ListView)view.findViewById(R.id.list_view);
        adapter=new ArrayAdapter<String>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }


    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if(currentLevel==LEVEL_PROVINCE){
                    selectedProvince=provinceList.get(position);
                    queryCities();

                }




                else if(currentLevel==LEVEL_CITY){
                    selectedCity=cityList.get(position);
                    queryCounties();
                }
                else if (currentLevel==LEVEL_COUNTY){


                    String weatherid=countryList.get(position).getWeatherId();
                   if(getActivity() instanceof MainActivity){
                       Intent intent=new Intent(getActivity(),WeatherActivity.class);
                       intent.putExtra("weather_id",weatherid);
                       startActivity(intent);
                       getActivity().finish();
                   }else if(getActivity() instanceof WeatherActivity){
                       WeatherActivity weatherActivity=(WeatherActivity)getActivity();
                       weatherActivity.drawerLayout.closeDrawers();
                       weatherActivity.swipeRefreshLayout.setRefreshing(true);
                       weatherActivity.requestWeather(weatherid);

                   }





                }

            }
        });


        backButton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                if(currentLevel==LEVEL_COUNTY){
                    queryCities();
                }
                else{
                    queryProvinces();
                }
            }
        });

        queryProvinces();

    }


    private void queryProvinces(){

        titleText.setText("中国");
        backButton.setVisibility(View.GONE);
        provinceList= LitePal.findAll(Province.class);
        if(provinceList.size()>0){
            dataList.clear();
            for(Province province:provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_PROVINCE;
        }
        else {
            String address="http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }

    }



    private void queryCities(){

        titleText.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);
        cityList=LitePal.where("provinceid=?",String.valueOf(selectedProvince.getId())).find(City.class);
        if(cityList.size()>0){
            dataList.clear();
            for(City city:cityList){
                dataList.add(city.getCityName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_CITY;
        }
        else {
            int provinceCode=selectedProvince.getProvinceCode();
            String address="http://guolin.tech/api/china/"+provinceCode;
            queryFromServer(address,"city");

        }



    }


    private void queryCounties(){
        titleText.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);
        countryList=LitePal.where("cityId=?",String.valueOf(selectedCity.getId())).find(Country.class);
        if(countryList.size()>0){
            dataList.clear();
            for(Country country:countryList){
                dataList.add(country.getCountryName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel=LEVEL_COUNTY;
        }
        else {
            int provinceCode=selectedProvince.getProvinceCode();
            int cityCode=selectedCity.getCityCode();
            String address="http://guolin.tech/api/china/"+provinceCode+"/"+cityCode;
            queryFromServer(address,"county");
        }

    }

    private void queryFromServer(String address,final String type){
        showProgressDialog();
        HttpUtil.sendOkHttpRequest(address, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        closeProgressDialog();
                        Toast.makeText(getContext(),"load error",Toast.LENGTH_LONG).show();
                    }
                });




            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {

                String responseText=response.body().string();
                boolean result=false;
                if("province".equals(type)){
                    result= Utility.handleProvinceResponse(responseText);
                }
                else if("city".equals(type)){
                    result=Utility.handleCityResponse(responseText,selectedProvince.getId());
                }
                else if("county".equals(type)){
                    result=Utility.handleCountryResponse(responseText,selectedCity.getId());
                }


                if(result){
                    getActivity().runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            closeProgressDialog();
                            if("province".equals(type)){
                                queryProvinces();
                            }
                            else if("city".equals(type)){
                                queryCities();
                            }
                            else if("county".equals(type)){
                                queryCounties();
                            }
                        }
                    });
                }


            }
        });

    }

    private void showProgressDialog(){

        if(progressDialog==null){
            progressDialog=new ProgressDialog(getActivity());
            progressDialog.setMessage("正在加载");
            progressDialog.setCanceledOnTouchOutside(false);
        }
        progressDialog.show();


    }

    private void closeProgressDialog(){

        if(progressDialog!=null){
            progressDialog.dismiss();
        }

    }



}
